src/game/level_folder.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3
   4 #include "system/stacktrace.h"
   5 #include "system/lt.h"
   6 #include "system/lt_adapters.h"
   7 #include "system/nth_alloc.h"
   8 #include "system/line_stream.h"
   9 #include "system/str.h"
  10 #include "system/file.h"
  11 #include "dynarray.h"
  12 #include "game/level_metadata.h"
  13
  14 #include "./level_folder.h"
  15
  16 #define LEVEL_FOLDER_MAX_LENGTH 512
  17
  18 struct LevelFolder
  19 {
  20     Lt *lt;
  21     Dynarray *filenames;
  22     Dynarray *titles;
  23 };
  24
  25 LevelFolder *create_level_folder(const char *dirpath)
  26 {
  27     trace_assert(dirpath);
  28
  29     Lt *lt = create_lt();
  30
  31     LevelFolder *level_folder = PUSH_LT(
  32         lt,
  33         nth_calloc(1, sizeof(LevelFolder)),
  34         free);
  35     if (level_folder == NULL) {
  36         RETURN_LT(lt, NULL);
  37     }
  38     level_folder->lt = lt;
  39
  40     level_folder->filenames = PUSH_LT(
  41         lt,
  42         create_dynarray(sizeof(const char*)),
  43         destroy_dynarray);
  44     if (level_folder->filenames == NULL) {
  45         RETURN_LT(lt, NULL);
  46     }
  47
  48     level_folder->titles = PUSH_LT(
  49         lt,
  50         create_dynarray(sizeof(const char*)),
  51         destroy_dynarray);
  52     if (level_folder->titles == NULL) {
  53         RETURN_LT(lt, NULL);
  54     }
  55
  56     char path[LEVEL_FOLDER_MAX_LENGTH];
  57     DIR *level_dir = PUSH_LT(lt, opendir(dirpath), closedir_lt);
  58
  59     for (struct dirent *d = readdir(level_dir);
  60          d != NULL;
  61          d = readdir(level_dir)) {
  62         if (*d->d_name == '.') {
  63             continue;
  64         }
  65
  66         snprintf(path, LEVEL_FOLDER_MAX_LENGTH, "%s/%s", dirpath, d->d_name);
  67         const char *filepath = PUSH_LT(lt, string_duplicate(trim_endline(path), NULL), free);
  68         if (filepath == NULL) {
  69             RETURN_LT(lt, NULL);
  70         }
  71
  72         LevelMetadata *level_metadata = create_level_metadata_from_file(filepath);
  73         if (level_metadata == NULL) {
  74             RETURN_LT(lt, NULL);
  75         }
  76         const char *title = PUSH_LT(
  77             lt,
  78             string_duplicate(level_metadata_title(level_metadata), NULL),
  79             free);
  80         destroy_level_metadata(level_metadata);
  81
  82         dynarray_push(level_folder->titles, &title);
  83         dynarray_push(level_folder->filenames, &filepath);
  84     }
  85
  86     closedir(RELEASE_LT(lt, level_dir));
  87
  88     return level_folder;
  89 }
  90
  91 void destroy_level_folder(LevelFolder *level_folder)
  92 {
  93     trace_assert(level_folder);
  94     RETURN_LT0(level_folder->lt);
  95 }
  96
  97 const char **level_folder_filenames(const LevelFolder *level_folder)
  98 {
  99     trace_assert(level_folder);
 100     return dynarray_data(level_folder->filenames);
 101 }
 102
 103 const char **level_folder_titles(const LevelFolder *level_folder)
 104 {
 105     trace_assert(level_folder);
 106     return dynarray_data(level_folder->titles);
 107 }
 108
 109 size_t level_folder_count(const LevelFolder *level_folder)
 110 {
 111     trace_assert(level_folder);
 112     return dynarray_count(level_folder->filenames);
 113 }